diff --git a/Dockerfile b/Dockerfile
index 49d1443e..f7037eb0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,6 +17,7 @@ FROM alpine:${ALPINE_VERSION}
 
 # install python, git, bash
 RUN apk add --no-cache git git-lfs python3 bash
+RUN apk add docker
 
 # install repo2docker
 COPY --from=0 /tmp/wheelhouse /tmp/wheelhouse